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sudo: by using ! character in the shadow file instead of a password hash can access to a run as all sudoer account

🗓️ 28 Apr 2020 15:48:08Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

Exclamation in shadow hash can allow sudo access from disabled accounts.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64sudo1.8.29-5.el8sudo-1.8.29-5.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lesudo1.8.29-5.el8sudo-1.8.29-5.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xsudo1.8.29-5.el8sudo-1.8.29-5.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64sudo1.8.29-5.el8sudo-1.8.29-5.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64sudo-debuginfo1.8.29-5.el8sudo-debuginfo-1.8.29-5.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lesudo-debuginfo1.8.29-5.el8sudo-debuginfo-1.8.29-5.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xsudo-debuginfo1.8.29-5.el8sudo-debuginfo-1.8.29-5.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64sudo-debuginfo1.8.29-5.el8sudo-debuginfo-1.8.29-5.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64sudo-debugsource1.8.29-5.el8sudo-debugsource-1.8.29-5.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lesudo-debugsource1.8.29-5.el8sudo-debugsource-1.8.29-5.el8.ppc64le.rpm
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21 Nov 2025 18:13Current
7.1High risk
Vulners AI Score7.1
CVSS 25
CVSS 3.17.5
EPSS0.02831
1